Piston-ring-compressing tool



A. RA PISTON Rim; 0

LOFF, In.

OMPRE APPLICATION nuzn FEB. 24, 192p.

ssme TOOL. Y

Patnted Julie 28, 1921.

a vwemto':

inaccessible place,

I UNITED STATES" PATENT OFFICE.

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Hsi'ON-RrNG cOMPREsSrnG moon.

Specification of lletterslatent. 'Patenteq June 28, 1921,

Application fllellebruary 2s, 1.520. Serial its. $180,927;

To allwho'm it maytcmem Be it known that I, ADOLPH Barons, Jr, a citizen of the United States, residing at Thiensville, county of Osaukee, and State of WVisoonsin, have invented newand useful Improvements in Piston Ring G0mpreSSing Tools, of which the following is a specification.

This invention relates to piston ring compressing tools.

Objects of this invention are to provide an improved piston inserting tool which will facilitate the insertion of pistons into cylinders; which may be used to readily and quickly grasp and hold the piston While it is being manipulated; and which will .efiectively and successively compress the piston rings. a v

Further objects are to provide-a piston ring tool of simple, rugged, and substantial designcapable of withstanding severe use;

which may bereadily manufactured from standard forms of materials such as bars, rods, etc. and which may be readily ad justed either to fit any size of piston or to operate upon a piston located in a relatively In the drawings: I

Figur 1 is a side elevation of the tool showing a piston partly inserted into a cylinder. I

Fig. 2 is a similar view at right angles to Fig. lshowing the handles in a different .position of adjustment.

Fig. 3 is a section on the line 353 of Fig.

Fig. 4 is adetail view of one of the shoes and associated parts.

Fig. 5 is a detail view showing a modified form of shoe.

The tool comprises a pair of handles 1 pivotally joined at 2 and extended in opposite directions to form the arms 3. Yokes 4 are adjustably mounted upon the arms 3, and are provided with set screws 5 for clamping the yokes 4 to the arms 3. Rods 6 are adjustably carried by the yokes 4 by passing the rods through openings in such yokes and securing them in place by set screws 7. Adjacent the lower portion of each rod a plurality of shoes 8 are universally mounted by means of a ball and socket joint 9.

These shoes 8 have a concave inner face 10 anda concav rib llp i ti g f om such iace adjacent he norm llyh t m edg o the-Tahoe- A bev le portion 1. l s fr m th inner cyl nd ical s rface l0 t the top, or most distant portion, of the rib 11,.s0

that a gradual slope is provided. It will be noted that the ribll serves to press the piston ring inwardly of the outer surfaceof the piston so that thering clears} the inner wall of the ay nder- "The ne a ong which th t r st ia'cammunicated to the shoes is causedsto pass adjacent the ribs by having the efinter. line of the'universahor balland socket joint, pass adja e t su h rib 1 i rr g men causes anunbalaneing of the shoes, as the upper,- portion re extended tospa 1 0 more additional rings, and tend to make them top heavy, with a resulting tendency to turn t fpositienh h rn gi p vented by providing helical springs 13 which are arranged about v the. universal join ear g inst th r 6 a sh 8. The frictiOn provided by the springs 13 prevent the rot t on f th sho a u the ax s of t e un ers l j n s,

Fig. 5 sho s another form f Sh e in which the bottom part 14 has been made the heavier part so that the shoe is; automatically maintaine in ts-cor p s ti n- Fig. 2 shows one of the possible relative adjus ments of. P rts at he de y have. The han'dlesl have vbeen rotated ing upon a piston which is located in a place relatively difficult of access, for instance,

partly beneath the dash or other portion of the body ofan automobile, Thedotted lines show the normal p sih notthe h ndl v shoes 8 are resting upon the top of the cylinder. The handles 1 are now pressed toward each other causing the upper edge of the concave faces of the shoes to engage the piston and one or more of the upper rings about the aXiS of the parts 3 and the set screws 5 tightened to lockthe handles in their inclined position.v This arrangement 'of the handles is especially suited to operatand the ribs 11 to engage the lowermost wardly into the cylinder, ;,-the successive rings riding inwardly upon the beveled portion 12 decreasing in diameter, andfinally passing into the cylinder.

When a P n with'fwidely Spacedringsa is to be manipulated, the rods 6 are extended downwardly a' material distance below the yokes l and thereafter clamped in position by the set screws 7 The adjustment, for variations in diameter ofpistons, is'securedv by moving the yokes- 4: inwardly 'or outwardly upon the portions3 and thereafter clamping them in adjustedposition by means of. the set screws 5. L i I j It will be seen that 'arugged, simple, and readily applied device has beenproduced, and thatthe major part of the device can be made from standard shapes" of material, such as rods, bars,'etc. i 4

It will further be seen that -greatuniversalit'y of application is secured by the vari ous adjustments, and that any one of several widely different types of pistons may be readily handled by this device.

I'claim;

1. A piston ring compressingtool, comprising a plurality of universally mount/ed shoes i'orengaging the piston ring at a pluralityfof points,'mea'ns for operating said shoes,and means adj ustably and operatively connecting said shoes and operating means.

2. A piston ring compressing'tool comprising a pair ofjpivotally joined operating 7 handles, a yoke adjustably carried by each the piston with certain of said arms extend "joined to each of said arms,

of said handles,rodsadjustably mounted in the yokes and a' shoe universally mounted upon each of said rods.

3. A iston'ring tool comprising a pair of handles; a pluralitiy of arms operatively connected to said; handles; piston ring engaging members to engage the ring at a plurality of points, one carried by and movably be moved inwardly thereby and auto-matically position itself.

e. A piston IlIlgtOOl comprising a plurality of arms adapted to be positioned around 'said'rods. w

and adapted to ingdownwardly upon opposite sides of said piston, aplurality of independent shoes car- 'ried by" said arms and adapted to bear upon [said piston ring, and means acting through said arms for causing said shoe to compress said ,piston ring.

5. A piston ring tool comprising a plurality of shoes arranged to be placed about and in contact with the pistonfeach of said shoeslcomprising a; rounded inner concave face and a projecting rib formed at the lower portion of and extending "inwardly from said concave face; a pair of operating handles; and intermediate means operatively connectportions, and arranged to be adjustably locked in any desired relative position, a

pair of rods: adjustably mounted. in 1 each yoke, and-extending at right angles thereto,

(and arranged tobe positioned about the piston, and a shoe for contacting with thepis-i ton ring universally mounted upon each of 7. A shoe, for a piston clampingitool,

having a substantially. cylindrical -concave face, a rib extending from said concave face, :and a beveled portion extending from" the .a surface of the concave'face to the top of the rib. I.

"ii My, 8. A piston ring; tool comprising aplurality of shoes arranged .to be placed about and in contact with thepiston, each of saidshoes comprising a rounded inner @conc'ave face and a projecting rib formed at the lower portion ofandextending inwardly from said and intermediate means operatively connecto ing said operating handles and said shoes,

T piston.

In testimony whereofl aiiix my signature ein the presenceof twowitnesses.

t RALO FF, JR.;

Witnesses: V 4 a V A. R. WOOLFOLK,J1., 7 '0. G.'WEBER.

concavewface a pair of operating handles; 

